Cabinet for calculating machines



Jan. 8, 1924. 1,480,259

L. c. GREINER CABINET FOR CALCULATING MACHINES 7 9 n R b J 4 A3 I ePatented Jan. 8, 1924.

UNITED STATES LOUIS C. GREINER, OF EVANSVILLE, INDIANA.

CABINET FOR CALCULATING MACHINES.

Application filed September 20, 1921.

To all whom it may concern:

Be it known that I, LOUIS C. Gnnrnnn, a citizen ofv the United States,residing at Evansville, in the county of Vanderburg and State ofIndiana, have invented certain new and useful Improvements in Cabinetsfor Calculating Machines, of which the following is a specification,reference being had to the accompanying drawings, forming a part hereof.

My invention relates to cabinets for calculating or other keyboardmachines, in which the machine is supported on a platform somewhat belowthe top of the cabinet and is arranged to be covered up when not in useby a movable cover which, when in closed position is continuous with thetop of the cabinet, and is so arranged that it maybe swung upward andrearward and dropped into vertical position at the rear of the cabinet,this movement of the movable cover operating to raise the platformcarrying the machine into position for convenient operation of the keysof its keyboard. Cabinets embodying this general construction are ingeneral use for typewriting machines and are commonly known astypewriter cabinets. It is the object of my invention to provide acabinet of this general class which will be simple and strong inconstruction and will be particularly adapted for use with calculatingmachines and other keyboard machines which for convenience in use shouldbe brought nearer the operator than is necessary with a typewritingmachine and should be inclined forward instead of being on a horizontalplane. A further object of the invention is to provide means by which,when the cabinet is closed, the entrance of dust will be effectivelyprevented. A further object of the invention is to provide means bywhich, if desired, the platform carrying the Serial No. 501,911.

Figure 4 is a detail view of the support for;1 the front of thesupporting platform, an

Figures 5 and 6 are detail viewsrespectively of the spring for raisingthe support shown inFigure 4 and the clip for engag- 1ng it.

In the drawings 1 indicates the fixed top of the cabinet here shown assupported on front legs 2 and back legs 3, the legs being connected attheir upper ends by front board 4, back board 5 and suitable end boardsto form a rigid structure. Towards one end this top 1 is cut away toform a space sufficient in size to receive the calculating machine 6. Inthis space is mounted the movable cover 7 ,which, when in closedposition,

is continuous with the top 1, and the supportis carried and will move itforward so that its front end will project in front of the line of thefront of the cabinet, and will also cause the platform to be inclinedforward so as to bring its keys into convenient position for use and toenable the paper roll at the back of the machine to be easily seen.

The front board 4 is cut away in line with the space for the movablecover nearly to its lower edge leaving a strip 4 to serve as a supportfor the front end of the platform 8 when the cabinet is open. Themovable cover 7 is provided near its front edge with a depending board 9which, when the movable cover is in horizontal position fills the spaceformed by cutting away the front board 4 and rests on the upper edge ofthe strip 4. At the sides'of the space in which the machine is receivedare side boards 10 and 11, the upper edges of which form ledges on whichthe side edges of the movable cover rest when it is in closed position.These side boards are cut away at their rear ends on curves as shown at12 these curves serving to guide the rear portion of the movable coveras it is forced rearward into the vertical positioni'n which it is shownin Figures 1 and 2.

Extending rearward from thelower edge of the strip 1 and inclineddownward towards the rear. is a bottom board 13 extendrear end of thisbottom board 13 is hinged,

' by a spring hinge 16, a downwardly opening door 17 the free edge ofwhich, when it is in closed position, abuts against the lower edge ofthe back board 5. This door serves to close the space between the rearedge of the bottom board and the back board against entrance of dust orinsects when the movable cover is in closed position and is adapted toyield to permit the rear end of the movable cover to pass downwardbetween the rear edge of the bottom board and the back board into theposition in which it is shown in Figures 1 and 2.

The supporting platform 8 on which the calculating machine is carried,when. the movable cover is in closed position, rests on the bottom board13 with its projection 15 extending downward through the opening 14, theplatform closing this opening against the entrance of dust or insects.

front end rides up on inclines 18 which are provided on the side boards10 and 11 just inside the strip 4 at the front end of the bottom boardonto the upper edge of the strip, and, by the means hereinafterdescribed, is caused to project a substantial distance in front of thisstrip.

The movement of the platform 8 with the machine carried by it iseffected by the movement of the movable cover through levers 21 andlinks 20. Lever 21 has a fixed pivot 22 on the side board10 (or ll). Itis pivoted at one end to the movable cover just inside the board 9, andits other end is connected by link 20 with the rear end of the platform8.- It is, of course, to be understood that a lever 21 and link 20 isprovided at each side of the platform 8. When the cabinet is to beopened, the parts being in the position in which they are shown inFigure 3, the movable cover is raised to the position shown in dottedlines in Figure 2, which swings the levers 21 on their pivots 22 causingthe links 20 to begin to push the platform 8 forward. As the movement ofthe movable cover continues its rear end passes down into the spacebetween the rear edgeof the bottom board and the back board and thelevers 21 carry the upper ends of links 20 upward and forward liftingthe rear end of the platform to the position shown in Figure 2 andforcing the front end of the platform over the edge of the strip a. Theweight of the movable cover, when it is in its rearmost verticalposition,

serves to hold the levers 21 in the positionshown in Figure 2 and tohold the rear end of the platform in the position shown.

YVhen the supporting platform is moved forward its The links 20 being,in the position shown,

so nearly in line with the levers 21, any rearward'or downward pressureon the platform is without effect to swing the levers to raise themovable cover.

Brackets 26 secured to the side boards 10 and 11 serve to support thelevers 21 in rear of the pivots 22. Strips 25 of felt or. I

other thin materialsecured to the under side of the movable cover at itsrear edge serve to close the opening between the rear edge of themovablecover and the portion of the top in rear of the space in whichthe mov able cover is arranged, when the cabinet is closed. A handle 27on theboard 9 serves as a hand hold in movingthe cover. The

projection 15 in the platform serves'as a weight to cause the rear endof the platform to drop readily when the movable c-over'is drawn.forward from the position in which it is shown in Figures 1 and 2 andtends to counter-balance the effect due to the forward inclination ofthe machine on the platform. The forward curved edge of this pro jection 15 serves in cooperation with the front end of the opening 1 1 inthe bottom:

board 13 to guide the rear end of thesupporting platform in its upwardand downward movement, to limit the forward movement of this supportingplatform and to ensure its return to rearward position as it is movedrearward and downward.

If it is desired to have the machine-on'a horizontal instead. ofaforwardly inclined.

base, the devices shown in Figures 1, 5 and 6 may be used. Theseconsistof a u shaped support 30 having the ends 31 of its legsoutwardlyextended to form pintles having,

bearings in blocks 32 secured to the bottom.

board at its front end just inside the strip 4. This support, when thecabinet is closed,

rests on the bottom. board as shown in Figure 3. The platform isprovided on its under side with a spring 33 adapted when.

which position it sustains the front end of:

the platform at the same level at which its rear end is sustained by thelevers 21 and links 21.

Having thus described my invention what I claim is:

In a cabinet for keyboard machines, the combination of a cover arrangedto be movable from forward horizontal position to rearward verticalposition, a supporting platform for the keyboard machine having adownwardly extending projection on its under side, a fixed bottom boardadapted to receive and support the supporting platform in its rearwardposition having an opening therein to receive said downwardly extendingprojection, means 0 rated by the cover for moving the supportingplatform bodily forward on the bottom 'board, raising its rear end andsustaining it in raised position, comprising levers having fixed pivotsbetween their ends and having pivoted connection at one end with theforward end of the cover and links pivoted at one end to the free end ofa lever and at the other end pivoted to the rear end of the supportingplatform, and means for sustaining the front end of the supportingplatform, the

downwardly extending projection, on the 15 means near the front edge ofthe bottom 20 board for supporting the front edge of the supportingplatform above the front board.

In testimony whereof I hereunto aflix my signature.

LOUIS C. GREINER.

